Effect of Austempering on the Wear Resistance of Austempered Ductile Iron

The effect of austempering on the wear resistance of austempered ductile iron(ADI) was studied.The experimental results show that the wear resistance decreases with increasing the austempering temperature In the range of 270~380 ℃.When the austempering temperature is 360 ℃,ADI has the lowest wear resistance.However,the wear resistance increases if the isothermal quenching temperature is above 360 ℃,The wear resistance decreases with increasing.the austempered time in the period of 30~20 minutes.When the austempered time is 60 minutes,ADI has the lowest wear resistance.The wear resistance increases if the time is above 60 minutes.